2011 ET4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3014974680 ± 1.14e-07
Semi-major axis (a)1.6318418056 AU ± 7.96e-08
Inclination (i)31.76210626° ± 1.92e-05
Long. of Asc. Node (Ω)347.61265685° ± 3.15e-06
Arg. of Perihelion (ω)149.52257034° ± 6.45e-05
Mean Anomaly (M)35.90281191° ± 2.16e-04
Mean Motion (n)0.4728192978°/day ± 3.46e-08
Perihelion dist (q)1.13984563 AU ± 1.95e-07
Aphelion dist (Q)2.12383798 AU ± 2.13e-07
Orbital Period2.08457288 yr ± 1.52e-07
Physical Parameters
H (abs. magnitude)20.87
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.245″
Uncertainty0
Orbit TypeAmor
MOID0.180742 AU
Observations Used106
Oppositions4
Arc Total2011-2018
First Observation Used2011-03-02
Last Observation Used2018-09-11
Observations (123)
Date Type RA Dec Mag Band Observatory
2011-03-02 22:56:09 C 12 09 38.02 +14 22 32.3 v 586
2011-03-02 22:56:27 C 12 09 37.93 +14 22 30.6 v 586
2011-03-02 22:56:43 C 12 09 37.84 +14 22 29.1 v 586
2011-03-02 22:58:55 C 12 09 36.66 +14 22 11.4 u 510
2011-03-02 23:07:54 C 12 09 33.83 +14 21 19.7 u 510
2011-03-02 23:16:54 C 12 09 30.96 +14 20 28.0 u 510
2011-03-02 23:25:53 C 12 09 28.01 +14 19 37.0 u 510
2011-03-02 23:34:52 C 12 09 25.18 +14 18 44.1 u 510
2011-03-04 09:22:34 C 11 58 50.05 +11 00 37.9 r 703
2011-03-04 09:38:31 C 11 58 44.94 +10 59 03.2 r 703
2011-03-04 09:54:30 C 11 58 39.79 +10 57 28.9 r 703
2011-03-04 10:10:29 C 11 58 34.86 +10 55 54.6 r 703
2011-03-04 17:55:16 C 11 56 09.47 +10 09 45.0 m 355
2011-03-04 17:59:26 C 11 56 08.17 +10 09 19.0 m 355
2011-03-04 18:02:32 C 11 56 07.20 +10 09 00.6 m 355
2011-03-04 18:04:37 C 11 56 06.50 +10 08 48.6 m 355
2011-03-04 18:05:38 C 11 56 06.15 +10 08 41.9 m 355
2011-03-04 21:24:31 C 11 55 07.23 +09 48 46.5 r A17
2011-03-04 21:35:45 C 11 55 03.65 +09 47 39.6 r A17
2011-03-04 21:48:24 C 11 54 59.63 +09 46 24.0 r A17
2011-03-05 08:35:07 C 11 51 37.02 +08 42 10.1 18.2 c 704
2011-03-05 08:54:16 C 11 51 30.83 +08 40 15.5 18.6 c 704
2011-03-05 09:13:19 C 11 51 24.77 +08 38 21.3 18.8 c 704
2011-03-05 09:31:42 C 11 51 18.81 +08 36 31.2 18.5 c 704
2011-03-05 09:50:04 C 11 51 12.95 +08 34 41.0 18.3 c 704
2011-03-06 00:25:28 C 11 46 43.32 +07 07 06.5 v 204
2011-03-06 00:33:02 C 11 46 40.90 +07 06 21.0 v 204
2011-03-06 00:40:39 C 11 46 38.48 +07 05 35.3 v 204
2011-03-06 04:19:24 C 11 45 32.94 +06 43 47.8 o H26
2011-03-06 04:21:55 C 11 45 32.09 +06 43 32.1 o H26
2011-03-06 04:26:59 C 11 45 30.57 +06 43 03.1 o H26
2011-03-06 08:35:01 C 11 44 12.48 +06 18 21.0 r G96
2011-03-06 08:49:06 C 11 44 07.98 +06 16 56.7 r G96
2011-03-06 09:03:20 C 11 44 03.44 +06 15 31.4 r G96
2011-03-06 09:17:37 C 11 43 58.87 +06 14 05.7 r G96
2011-03-08 22:23:59 C 11 25 36.02 +00 12 30.3 v B03
2011-03-08 22:29:37 C 11 25 34.31 +00 11 57.5 v B03
2011-03-08 22:35:16 C 11 25 32.60 +00 11 24.8 v B03
2011-03-08 22:40:54 C 11 25 30.91 +00 10 52.7 v B03
2011-03-08 23:25:37 C 11 25 17.62 +00 06 35.0 r 203
2011-03-09 00:46:47 C 11 24 53.02 -00 01 14.2 r 203
2011-03-09 23:41:47 C 11 18 14.26 -02 11 56.8 u 160
2011-03-09 23:43:33 C 11 18 13.74 -02 12 06.6 u 160
2011-03-09 23:45:17 C 11 18 13.23 -02 12 16.4 u 160
2011-03-11 05:35:50 C 11 09 48.14 -04 56 42.7 o H21
2011-03-11 05:38:39 C 11 09 47.32 -04 56 58.0 o H21
2011-03-11 05:42:19 C 11 09 46.27 -04 57 17.7 o H21
2011-03-11 05:55:52 C 11 09 42.35 -04 58 30.7 o H21
2011-03-17 04:53:22 C 10 33 58.82 -16 05 58.4 u 448
2011-03-17 05:05:59 C 10 33 55.90 -16 06 48.1 u 448